Heating-furnace



r. A. MAGEE.

HEATING FURNACE.

. KAppliution filed Aug. 1 5, 1896.) (No Model.) 2 Sheets-Sheet l.

Patented May 23, I899.

n4: nunms PETERS ca. PNOTO-LITHQ, wnsmnm'on. o. c.

No. 625,577. Patented ma 23, was.

F.-A. mass.

HEATING FURNACE.

(Lpplicltinn fllod Aug. 15, 1896.)

2 Sheets-Sheet 2.

(No Model.)

WI'T'IJ E5 555 WQQM. Q,

m: "cums Ptnzns 0a.. mom'umq, WASHINGTON, p4 c.

UNITED STATES PATENT OFFICE.

FRANK A. MAGEE, OF WENHAM, MASSACHUSETTS, ASSIGNOR To THlE MAGEE FURNACE COMPANY, oF BOSTON, MASSAoHUsET s.

HEATING-FURNACE.

SPECIFICATION forming part of Letters Patent No. 625,577, dated May 23, 1899.

Application filed August 15, 1896. Serial No. 602,907. (N odel-l To all whom it may concern:

Be itknown that I, FRANK A. MAGEE, acitizen of the United States, residing at Wenham, in the county of Essex. and State of Massachusetts, have invented a new and useful Improvement in l Ieating-Furnaces, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings,forminga part of this specification, in explaining its nature.

The invention relates especially to that class of heating-furnaces known as gas-burning. Such furnaces assist combustion by the introduction of air into the upper part of the fire-pot or lower part of the combustionchamber and generate a higher heat than the ordinary type of heating-furnace. The amount of heat so generated in these furnaces is so great as to rapidly burn out the wall of the furnace close to the surface of the fire; and my invention consists in a gas-ring preferably forming a part of the wall of the fire-pot and the inner surface or section of which acts to protect the wall of the ring and the furnace and is also readily removable without taking the furnace apart.

Referring to the drawings, Figure 1 is a view in elevation of a portion of the exterior and a portion of the interior of a heating-furand C the gas-ring part of the fire-pot. I

have represented it in the drawings as having an outer cast-iron wall or shell 0, arranged to form a section of the outer wall of the furnace fire-pot and shaped to form a continuous air-passage. It is also shown as made separate or apart from the lower section of the fire-pot wall and from the wall to the combustion-chamber; but I would say that it may be made integral with either or with both. It is preferably cylindrical in shape, and when made as aseparate piece it preferably has about its lower edge a downwardlyextending section or lip c, which enters the recess or cup 0" in the upper edge of the lower section of the fire-pot wall. It also then has about its upper edge a recess or cup 0 which receives a downwardly-extending section or lip 13 of the dome or wall of the combustion-chamber. It iscovered and lined upon its inner face by the removable section G which preferably is made of a number of separate parts and which may be of fire-brick or cast-iron and which are so shaped as to cover the entire inner surface of the section 0', being that part of the section of the firepot and combustion-chamber which is subjected to the quickest deterioration and. wear because of the action of the fire and great heat thereon. This sectional protective gasring may be applied to the section 0 of the fire-pot wall in any desired way, and I have represented in the drawings as one way of so applying the ring the fashioning or shaping of the outer section 0', whereby it is provided with a lower inner face 0 an upper inner face 0 a lower rest 0 and an upper recess 0 below the inner face, and which faces, rest, and recess are arranged to receive and hold the parts a of the said inner section 0 Each of these parts 0 is shaped upon its back at c 0 to fit the said faces 0 c of the section 0, and each has the upper extension 0 which enters the recess 0 and the lower extension 0 which extends upon the rest 0 The face 0 and rest 0 are within the line of the face 0 so that the various parts 0 of the said inner section 0 are caused to be held in a position inclined from their lower edge outward. (See Figs. 1 and 2.) The vertical edges of the various parts a are shaped to form a continuous ring, and thus serve to hold the various members against the section 0 and secured to each other. I would not be understood, however, as limiting myself to this particular way of applying the said parts 0 of the said ring to the said fire-pot section or wall 0. The parts 0 of the inner section may be of fire-brick, as represented in Fig. 1, or they may be of cast-iron or other metal, as shown in Fig. 3.

The air-passage D, formed by the inner section 0 and the outer section, is preferably continuous about the furnace at the upper edge of the fire-pot wall, and it is connected with the combustion-chamber or the upper part of the fire-pot by inlets d, which extend through the inner section.

Fig. 1, or they may be horizontal, as shown in Fig. 3, or have any other direction, and they may be of any desired shape in crosssection. Inlets may also be arranged between the ends of the parts a as represented in Fig. 3, and when the said parts are made of -they have been subjected to heat, and until they have been so expanded thereis a chance of their being jostled out of place because of this loose fitting.

Air may be fed or supplied to the air-passage D in any desired way. I have represented as one way the use of one or more inlets F. In Fig. 2 two are shown below the door to the combustion-chamber, and they are formed by hollow interior-threaded bosses ff, with which short threaded pipe-sections f f screw. These pipe sections extend through holes in the plate f ,to which they are attached by coupling-nuts and form a communication between the-chamber f and the airpassage' D, the said chamber f being formed by a box consisting of the said plate f and an outer plate f, in which are air-inlets f adapted to be closed or varied as to size by a j sliding damper f. It will be understood that in use the-air for better combustion of the fuel or of the gases, is drawn into the passage D and through the distributing-inlets d to the fire.

It will be observed that the removal of a worn or burned out gas-ring section 0 and the substitution of a new one to take the place of the old may be accomplished without taking the furnace apart ordisturbing the fire-pot or dome. It will also be seen that'the removable sections, while they form the inner wall of the air-chamber D, also serve to completely protect that section of the fire-pot from the fire and make it possible to always maintain such section in good or better condition as any other part of the fire-pot or combustion-chamber wall.

These inlets may be inclined downwardly, as represented in Having thus fully described my invent-ion, I claim and desire to secure by Letters Patent of the United States.

1. The combination in a heating stove or furnace of the section A of the fire-pot wall, the wall B of the combustion-chamber, the independent wall-section 0 connected with the fire-pot wall and combustion-chamber wall, having the inner faces c 0 the rest 0 and the recess 0 with the removable protecting-section C formed of the parts 0 having the faces 0 0 and the extensions o 0 substantially as described. v 2. The combination in a heating stove or furnace of the section A of the fire-pot wall, the wall B of the combustion-chamber, the gas-ring 0 having the air-passage D and the removable inner section vC the air-chamber f the sliding damper f and the pipesf f as and for the purposes described.

3. In a heating stove or furnace the combination of the fire-pot wall A, the combustion-chamber wall B and an intermediate wall-section O curved or shaped to provide upon its inner side a chamber or cavity inclosed upon its top and bottom and outer side and having above and below said chamber or cavity faces or rests with a lining or cover of removable sections of fire bricks or plates having their inner surfaces shaped to bear against said faces and be supported by said rests and completing the said chamber, the said removable sections providing passages from said chamber to the combustion-chamber, and being removable through the doorway to the combustion-chamber without disturbing the fire-pot wall or the wall to the combustion-chamber.

4. The combination in a heating stove or furnace of the fire-pot wall A, the combustion-chamber wall B and an independent intermediate gas-ring section comprising the casting O in the form of a plate outwardly bowed or extended, having at its upper and lower edge sections of joints for connecting it with the fire-pot wall and the combustionchamber wall, and also having faces and rests upon its inner side near its top and bottom,. and removable sectional fire bricks or plates which are shaped upon their back sides to cooperate with said faces and rests as a means for supporting them in position, and passages extending through said plates or rests from the chamber D, which chamber is formed by the said casting C and said plates or rests.

FRANK A. MAGEE.

In presence of GEORGE O. G. Comm, J. M. DOLAN. 

